the battery runs
down and ‘gets
flatter’
the environment
is warmed and
lit
an electrical loop
links these two
what you see on the benchtop
chemicals
are reacting
in the
battery
heating
and light
-
ing by the
bulb
electrical
working
links these
happenings
what’s happening all the time
what happens over time
a chemical
store of
energy is
emptied
a loop of
circulating
stuff
connects
the changes
a thermal
store of
energy is
filled